Die for cutting leather



(NOModel.) v

' A. D. GOBTZ.

DIE FOR CUTTING LEATHER.

Patented-June 14, 1887i I jawemm:

@vih/wow@ s er1 washiugmn, o. c,

UNITED STATES PATENT OEEicE.

ADAM D. GOE'IZ, l OF MARTINSBURG, PENNSYLVANIA.

DIE Foe CUTTING LEATHER.

This invention relatesv to leather-cutters,v

. and more particularly to that class thereof in my invention.

"a scrap of leather after having whicha die is employedto cut shoe-strings, thongs, strips, 85e.,- i'rom scrap-leather; and

the object ofthe invention is to provide a die which is simple and easyv for the above purpose of manufacture, cheap, .and durable.

With these objects in view the invention consists in certain features of construction hereinafter specified, and particularly pointed out in the claims.

Although herein shown and described as for the purpose of cutting leather, it is evident that the invention may be used in cutting metal, or any other material where a cut of this kind is required.

Referring tothe drawings, Figure l is a plan of a die constructed in accordance with my invention. Fig. 2 is a central vertical section on the line X Xof Fig. .1. Fig. 8 is a plan of been operated upon by a die constructed in accordance with Fig. 4. is a modiiicatiou hereinafter referred of a punch which may be employed in connection With the die.

Like letters of reference indicate like parts in all the figures of the drawings.

, In carrying out my invention I employastrip of metal of the desired widtli and length, the length being strip or thong it is desired to cut, said strip of metal, A, being brought to a proper temper for the purpose for which it is required. By any suitible grinding device both sides of one edge of the stri p are beveled, asat A', downto within a short distance of the edge. A second oper` ation or submission of the strip to the grinding device isgonethrough and forms the knifeedge A2. The strip is then brought to a proper heat for manipulation, and is coiled arounda spindle, each coil of the strip being in the same plane with the preceding coils and being of the hammer or other to. Fig. 5 is aside elevation vformed in coils,

determined by the length of theV contiguous to cach otherthat is to say, neinterinediatespaciug material or device is employed. A sufficient number of the coils having been made, it Will be seen, as shown in Fig. 2 of the drawings, that by reason ofthe bevels A A2 a space isformed between each coil, which space determines the width of the thong or strip produced by the die. Byl reason of coiling thestrip upon a spindle a space or aperture, A3, will be formed in the center of the die, which space, when the die is brought into operation upon a piece of leather or other material, will form a means whereby a suitable device may be inserted from the top of the die, forcing the strip eut out ofthe interstices A4. A suitable punch, B, provided with a cutting-nipple, B', may be inserted in the aperture A3 of the die, and by a stroke pressure brought to bear upon it and the die, it (the punch) will form an aperture, as B2, on the blank, which will be the center of the coil cut. A knife may then be employed to continue the cut of the coil to the aperture, if desired, whereby the uncut portion left by the aperture A3 will be cut.

In Fig. 4 I have shown a modication of my invention, and it consistsin beveling only one side of the strip of metal to form the interstices A. In this modification the bevel A is continued from about midway the strip to one of its edges, forming a cutting-edge, A2.

Although I have herein shown my die I do not limit my invention to the shape shown, as it is obvious that by providing a suitably-shaped core or spind1cfor instance, triangular-the contour ofthe coils will partake of thatshape, and thus continued strips ot triangular shape may be cut. The strip may simply be bent upon itself, forming a straight cut; or it may be formed in waves,` thus forming different designs, which may be used for various purposes.

Having described my invention and its-operation, What I claim is- 1. A die for cutting thongs, whangs, and other continuous strips, consisting of a strip of metal closely wound upon itself, tapered and ground to form a cutting-edge, each convolution being in Contact with the preceding strip, substantially as specified.

2. A die for cutting thongs, whangs, and

other continuous strips of leather, consisting of a strip of metal tapered or' beveled and ground to form a cuttingedge, and Wound in convolute form upon a core, each convolution being in Contact with the preceding one, in combination with a punch, as B, substantially as specified.

3. The strip A, beveled as at A A2, Wound to form a coil and to form the space A",wl1ereby material cut thereby may be removed from the die, substantially as specified.

4.. The combination ofthe strip as at A A2, and coiled to form the space A, with interstices A", with the punch B, having the cutting-nipple at one end, said punch bein;r adapted to enter the space A3 of the die, substantially as and for the purpose specified.

In testini ou," whereof I aflix my signature in in presence of two witnesses.

ADAM D. GOETZ.

Witnesses:

D. W. BONEBREAK,

A, beveled JOHN W. CARSON. 

